CN219862432U - Steel tower vertical rotating device - Google Patents
Steel tower vertical rotating device Download PDFInfo
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- CN219862432U CN219862432U CN202321226051.7U CN202321226051U CN219862432U CN 219862432 U CN219862432 U CN 219862432U CN 202321226051 U CN202321226051 U CN 202321226051U CN 219862432 U CN219862432 U CN 219862432U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 183
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- 238000007906 compression Methods 0.000 claims abstract description 45
- 238000004873 anchoring Methods 0.000 claims abstract description 35
- 238000009434 installation Methods 0.000 claims abstract description 32
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 36
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- 238000013461 design Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 238000000429 assembly Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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Abstract
The utility model relates to a steel tower vertical rotation device which comprises two groups of temporary brackets symmetrically arranged on two sides of a bridge deck, steel tower columns lapped on the temporary brackets, a tower top anchoring seat and a tower bottom anchoring seat which are arranged on the steel tower columns, a back rope traction mechanism arranged between the tower top anchoring seat and the bridge deck, a compression bar hinged on the tower bottom anchoring seat, a first rotating hinged seat arranged on the bridge deck, flexible cable steel strands arranged between the tower top anchoring seat and the compression bar, a vertical rotation traction mechanism arranged between the compression bar and the bridge deck and a bracket parallel connection arranged between the compression bars. According to the utility model, the pair of steel tower columns is synchronously assembled on site through the temporary support, the installation initial included angle between the compression bar and the steel tower columns is reduced by installing the compression bar in a hinged mode, and meanwhile, the support is used for parallel connection and connection positioning, and the traction force of the vertical rotation traction mechanism and the back cable traction mechanism can simultaneously traction the vertical rotation pair of steel tower columns, so that the deviation of the installation position is reduced, and the construction efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of bridge engineering, in particular to a steel tower vertical rotation device.
Background
With the continuous development of science and technology, new technology is continuously presented in bridge bracket-free construction, and swivel construction is one of the technologies. The bridge swivel construction is a construction method that after a bridge structure is manufactured (poured or spliced) at a non-design axis position, the construction method can convert the operation above an obstacle into operation on the shore or near the ground through swivel positioning. According to the rotation direction of the bridge structure, it can be divided into a vertical swivel construction method, a horizontal swivel construction method, and a method of combining horizontal swivel and vertical swivel. At present, the installation of a steel tower column of an oval cable tower is generally carried out by adopting a vertical swivel construction method, and during construction, all stages of the steel tower column are welded on the ground in sequence in advance, and then the steel tower column is swiveled by utilizing a compression bar to vertically lift, so that the installation of the steel tower column is completed. The swivel construction is suitable for special river channels which span deep valleys and are difficult to hoist, and has the characteristics of hoisting cost saving, safety, reliability, good integrity and the like. More and more railways and bridge beams of the railways begin to use swivel construction methods recently, so that normal transportation of the railways or the highways is not affected, and the swivel construction method has the characteristics of saving a large amount of support wood or steel, being safe and reliable and reducing construction difficulty.
The Chinese patent with the issued publication number of CN218233177U discloses a steel bridge tower vertical rotation auxiliary structure, which comprises a main beam bridge, a vertical rotation component and an anti-over rotation component; the vertical rotating assembly comprises a compression bar, a traction rope, a inhaul cable and two rear anchor assemblies, a hinged support is arranged on the bridge deck of the girder bridge at a position corresponding to the rotating position of the steel bridge tower to be rotated, and one end of the compression bar is hinged with the hinged support; the two rear anchor point assemblies are arranged on two sides of the lower end of the bridge deck of the main girder bridge; one end of the inhaul cable is connected with the upper part of the compression bar, and the other end of the inhaul cable is connected with the top of the steel bridge tower to be rotated; one end of the anti-over-rotation component is connected with the main girder bridge, and the other end of the anti-over-rotation component is connected with the steel bridge tower to be rotated and is used for preventing over-rotation phenomenon possibly generated in the vertical rotation process of the steel bridge tower to be rotated.
The prior art solutions described above have the following drawbacks: in order to ensure the acting direction of the traction rope on the traction force of the compression bar, a larger angle is required to be kept between the compression bar and the steel tower through the arrangement of the supporting frame in the initial state, but the compression bar is higher in height by adopting the mode, so that the compression bar is inconvenient to assemble, and the construction efficiency is influenced; in addition, for oval cable towers, steel columns positioned at two sides of a bridge are required to be connected in a crossing way after vertical rotation, and the structure can not simultaneously pull the steel columns vertically rotated into pairs, so that the pairs of steel columns are easy to have mounting position deviation, the follow-up construction is inconvenient, and the improvement is needed.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provide a steel tower vertical rotation device which has the advantage of improving the construction efficiency.
The above object of the present utility model is achieved by the following technical solutions:
a steel tower erects and changes device for cooperate the bridge floor to arrange, including two sets of symmetry arrange in the temporary support of bridge floor both sides, overlap joint in steel tower post on the temporary support, set up in overhead anchor seat and the tower bottom anchor seat on the steel tower post, set up in back cable traction mechanism between overhead anchor seat and the bridge floor, articulated in the depression bar on the tower bottom anchor seat and set up the first pivot seat on the bridge floor, set up in flexible cable stranded conductor between overhead anchor seat and the depression bar, set up in erect and change traction mechanism between depression bar and the bridge floor and set up the support parallel connection between this pair of depression bar, contained angle between steel tower post, depression bar and the flexible cable stranded conductor is 45~75 respectively, the articulated axial lead of depression bar and first pivot seat is parallel, and with the length direction of steel tower post is perpendicular respectively.
By adopting the technical scheme, a pair of steel tower columns positioned at two sides of a bridge deck are horizontally spliced on site through the two groups of temporary brackets respectively, after splicing is completed, a compression bar is lapped on the surface of the steel tower column and is hinged on a tower bottom anchoring seat, and then the installation of a back cable traction mechanism, a flexible cable steel strand, a vertical rotation traction mechanism, a bracket parallel connection and the like is sequentially completed; applying multistage load during vertical rotation, firstly separating a steel tower column from a simple bracket by utilizing a vertical rotation traction mechanism, lifting the steel tower column to about 60 degrees from a bridge deck, suspending the vertical rotation traction mechanism, pre-tightening a back rope traction mechanism, and then synchronously pulling the steel tower column to 90 degrees for positioning by utilizing the gravity of the steel tower column and the traction force of the vertical rotation traction mechanism and the back rope traction mechanism and connecting and positioning by utilizing the bracket parallel connection, and then finely adjusting the steel tower column by utilizing the traction force of the vertical rotation traction mechanism and the traction force of the back rope traction mechanism until reaching a design position; in the process, the pair of steel tower columns are synchronously assembled on site through the temporary support, and the compression bar is installed in a hinged mode, so that the initial installation included angle between the compression bar and the steel tower columns is effectively reduced, the early construction is facilitated, meanwhile, the support is utilized for parallel connection to connect and position, and the traction force of the vertical rotation traction mechanism and the back cable traction mechanism can simultaneously traction the vertical rotation pair of steel tower columns, the deviation of the installation position is reduced, and the construction efficiency is improved.
The utility model is further provided with: the included angle between the steel tower column and the compression bar is 60 degrees, the included angle between the steel tower column and the flexible inhaul cable steel strand is 48 degrees, and the included angle between the compression bar and the flexible inhaul cable steel strand is 72 degrees.
By adopting the technical scheme, under the installation angle, the deviation of the installation position between the pair of steel tower columns after vertical rotation is minimum.
The utility model is further provided with: the back cable traction mechanism comprises a bridge deck anchoring seat arranged on a bridge deck, a first mounting seat hinged to the bridge deck anchoring seat, a first oil cylinder arranged on the first mounting seat, a first connecting seat hinged to the tower top anchoring seat, and a back cable steel strand arranged between the first connecting seat and a piston rod of the first oil cylinder, wherein hinge axes of the first mounting seat and the first connecting seat are respectively parallel to hinge axes of the first hinge seat.
Through adopting above-mentioned technical scheme, first hydro-cylinder has simple structure, reliable operation, the steady advantage of transmission, can provide traction force in steel tower column one side that is close to simple and easy support through the back cable steel strand wires to with erect and change traction mechanism cooperation, prevent that the steel tower column from rotating excessively.
The utility model is further provided with: the first oil cylinder is hinged to the first mounting seat, and the hinge axes of the first mounting seat and the first oil cylinder are mutually perpendicular; the back inhaul cable steel strand is hinged to the first connecting seat, and the hinge axes of the first connecting seat and the back inhaul cable steel strand are mutually perpendicular.
By adopting the technical scheme, the traction precision can be improved, the deviation of the installation position is reduced, and the construction efficiency is improved.
The utility model is further provided with: the compression bar comprises a tower bottom connecting section hinged to the tower bottom anchoring seat, a square pipe arranged on the tower bottom connecting section, a plurality of reinforcing ribs arranged in the square pipe at equal intervals, and a inhaul cable connecting section arranged on the square pipe.
By adopting the technical scheme, the structural strength can be improved.
The utility model is further provided with: an adjusting seat is hinged on the inhaul cable connecting section, and two ends of the flexible inhaul cable steel strand are respectively hinged on the tower top anchoring seat and the adjusting seat; after the flexible inhaul cable steel strand is straightened, the hinge axis of the adjusting seat is parallel to the hinge axis of the first hinge seat, and the hinge axes of the two ends of the flexible inhaul cable steel strand are respectively perpendicular to the hinge axis of the first hinge seat.
By adopting the technical scheme, the traction precision can be improved, the deviation of the installation position is reduced, and the construction efficiency is improved.
The utility model is further provided with: at least two flexible inhaul cable steel strands are arranged in parallel.
By adopting the technical scheme, the structural strength can be improved.
The utility model is further provided with: the vertical rotation traction mechanism comprises a second rotation hinged support arranged on a bridge deck, a second installation seat hinged to the second rotation hinged support, a second oil cylinder arranged on the second installation seat, a second connecting seat hinged to the inhaul cable connecting section, and a vertical rotation inhaul cable steel strand arranged between the second connecting seat and a piston rod of the second oil cylinder, wherein hinge axes of the second installation seat and the second connecting seat are respectively parallel to the hinge axis of the first rotation hinged support.
Through adopting above-mentioned technical scheme, the second hydro-cylinder has simple structure, reliable operation, the steady advantage of transmission, can improve traction force in steel tower column deviates from simple and easy support one side through erectting the cable steel strand wires, accomplishes the steady vertical rotation of steel tower column.
The utility model is further provided with: the second oil cylinder is hinged to the second mounting seat, and the hinge axes of the second mounting seat and the second oil cylinder are mutually perpendicular; the vertical rotation inhaul cable steel stranded wire is hinged to the second connecting seat, and the hinge axes of the second connecting seat and the vertical rotation inhaul cable steel stranded wire are perpendicular to each other.
By adopting the technical scheme, the traction precision can be improved, the deviation of the installation position is reduced, and the construction efficiency is improved.
The utility model is further provided with: the first rotating hinge seat and the second rotating hinge seat are identical in structure and symmetrically arranged on two adjacent bridge piers of the bridge deck, and each of the first rotating hinge seat and the second rotating hinge seat comprises a base arranged on the bridge piers, and a cable tower hinge plate and an oil cylinder hinge plate which are respectively arranged on two sides of the base.
Through adopting above-mentioned technical scheme, after the construction of this pair of steel tower column of first pivot seat department is accomplished, the cable tower hinge piece that can utilize the second pivot seat is as the mounting point of steel tower column, converts the function of original first pivot seat promptly to install the hydro-cylinder hinge piece in first pivot seat with the second hydro-cylinder, convert the function of original second pivot seat promptly, so that accomplish the construction of steel tower column on the adjacent pier, be favorable to practicing thrift construction materials, improve the efficiency of construction.
In summary, the beneficial technical effects of the utility model are as follows: the pair of steel tower columns is synchronously assembled on site through the temporary support, and the compression bar is installed in a hinged mode, so that the initial installation included angle between the compression bar and the steel tower columns is effectively reduced, the early construction is facilitated, the support parallel connection is utilized for connection positioning, the traction force of the vertical rotation traction mechanism and the traction force of the back rope traction mechanism can be utilized for simultaneously dragging the vertical rotation pair of steel tower columns, the deviation of the installation position is reduced, and the construction efficiency is improved.
Drawings
Fig. 1 is a schematic structural view of the steel tower vertical turning device in the horizontal splicing state of the steel tower column.
Fig. 2 is a schematic structural view of the steel tower vertical turning device in the vertical turning process of the steel tower column.
Fig. 3 is a schematic structural view of the steel tower vertical turning device after the steel tower column vertical turning is completed.
FIG. 4 is a schematic diagram of the connection between the strut and the bracket parallel of the present utility model.
FIG. 5 is a schematic illustration of the connection between the steel tower, strut and bracket ties of the present utility model.
Fig. 6 is a schematic diagram of the connection relationship between the steel tower column, the back cable traction mechanism, the compression bar, the flexible inhaul cable steel strand and the vertical rotation traction mechanism of the utility model.
Fig. 7 is a partial schematic view of the vertical rotation traction mechanism of the present utility model.
In the figure, 1, a temporary bracket; 2. a steel tower column; 3. an overhead anchor base; 4. a tower bottom anchoring seat; 5. a back cable traction mechanism; 51. bridge deck anchor seats; 52. a first mount; 53. a first cylinder; 54. a first connection base; 55. a back stay cable steel strand; 6. a compression bar; 61. a bottom connection section; 62. square tubes; 63. reinforcing ribs; 64. a guy cable connecting section; 7. a first swivel mount; 71. a base; 72. a cable tower hinge plate; 73. an oil cylinder hinge plate; 8. a flexible inhaul cable steel strand; 81. an adjusting seat; 9. a vertical rotation traction mechanism; 91. a second swivel mount; 92. a second mounting base; 93. a second cylinder; 94. a second connecting seat; 95. vertically rotating the inhaul cable steel strand; 10. and the brackets are connected in parallel.
Detailed Description
The utility model will be further described with reference to the drawings and detailed description in order to make the technical means, the creation characteristics, the achievement of the objects and the functions of the utility model more clear and easy to understand.
Referring to fig. 1 and 3, a steel tower vertical rotation device disclosed by the utility model is used for being matched with a bridge deck, and comprises two groups of temporary brackets 1 symmetrically arranged on two sides of the bridge deck, steel tower columns 2 overlapped on the temporary brackets 1, a tower top anchoring seat 3 and a tower bottom anchoring seat 4 arranged on the steel tower columns 2, a back cable traction mechanism 5 arranged between the tower top anchoring seat 3 and the bridge deck, a compression bar 6 hinged on the tower bottom anchoring seat 4 and a first rotating hinged seat 7 arranged on the bridge deck, a flexible cable steel strand 8 arranged between the tower top anchoring seat 3 and the compression bar 6, a vertical rotation traction mechanism 9 arranged between the compression bar 6 and the bridge deck, and a bracket parallel connection 10 arranged between the pair of compression bars 6. After the vertical rotation is completed, the included angle between the steel tower column 2 and the pressure rod 6 is 60 degrees, the included angle between the steel tower column 2 and the flexible inhaul cable steel stranded wire 8 is 48 degrees, the included angle between the pressure rod 6 and the flexible inhaul cable steel stranded wire 8 is 72 degrees, and the hinge axes of the pressure rod 6 and the first hinge support 7 are parallel to the bridge deck and perpendicular to the length direction of the steel tower column 2.
Referring to fig. 2, a pair of steel columns 2 positioned at both sides of a bridge deck are horizontally spliced on site through the two temporary supports 1, after splicing, a compression bar 6 is lapped on the surface of the steel column 2 and is hinged on a tower bottom anchoring seat 4, and then the installation of a back cable traction mechanism 5, a flexible cable steel strand 8, a vertical rotation traction mechanism 9, a support parallel connection 10 and the like is sequentially completed. Applying multistage load during vertical rotation, firstly separating the steel tower column 2 from a simple bracket by utilizing a vertical rotation traction mechanism 9, lifting the steel tower column to about 60 degrees from a bridge deck, suspending the vertical rotation traction mechanism 9, pre-tightening a back rope traction mechanism 5, and then utilizing the self gravity of the steel tower column 2 and the traction force of the vertical rotation traction mechanism 9 and the back rope traction mechanism 5, connecting and positioning the steel tower column 2 to be in place by utilizing a bracket parallel connection 10, and then utilizing the traction force of the vertical rotation traction mechanism 9 and the back rope traction mechanism 5 to finely adjust the steel tower column 2 until reaching a design position.
Referring to fig. 4, in order to improve the connection strength of the compression bar 6 and prevent the compression bar 6 from being deformed during the synchronous vertical rotation of the steel tower column 2, the compression bar 6 includes a tower bottom connection section 61 hinged to the tower bottom anchoring seat 4, a square tube 62 provided on the tower bottom connection section, a plurality of reinforcing ribs 63 provided in the square tube 62 at equal intervals, and a cable connection section 64 provided on the square tube 62, and the bracket parallel 10 is provided between the pair of tubes 62.
Referring to fig. 5, in addition, an adjusting seat 81 is hinged to the cable connection section 64, and two ends of the flexible cable steel strand 8 are respectively hinged to the tower top anchoring seat 3 and the adjusting seat 81. After the flexible stay cable steel stranded wires 8 are straightened, the hinge axis of the adjusting seat 81 is parallel to the hinge axis of the first hinge seat 7, and the hinge axis of the two ends of the flexible stay cable steel stranded wires 8 are respectively perpendicular to the hinge axis of the first hinge seat 7. The connection mode can improve traction precision, reduces deviation of installation positions of the pair of steel tower columns 2, and is beneficial to improving construction efficiency.
Referring to fig. 6, the back cable traction mechanism 5 includes a deck anchor seat 51 provided on a deck, a first mount seat 52 hinged on the deck anchor seat 51, a first cylinder 53 hinged on the first mount seat 52, a first connection seat 54 hinged on the tower top anchor seat 3, and a back cable steel strand 55 hinged on the first connection seat 54 and provided on a piston rod of the first cylinder 53. The hinge axes of the first mounting seat 52 and the first connecting seat 54 are parallel to the hinge axis of the first hinge seat 7, the hinge axes of the first mounting seat 52 and the first oil cylinder 53 are perpendicular to each other, and the hinge axes of the first connecting seat 54 and the back cable steel strand 55 are perpendicular to each other. The connection mode can improve traction precision, reduces deviation of installation positions of the pair of steel tower columns 2, and is beneficial to improving construction efficiency.
Referring to fig. 6 and 7, the vertical rotation traction mechanism 9 includes a second rotation hinge seat 91 provided on the bridge deck, a second installation seat 92 hinged on the second rotation hinge seat 91, a second oil cylinder 93 hinged on the second installation seat 92, a second connection seat 94 hinged on the cable connection section 64, and a vertical rotation cable steel strand 95 hinged on the second connection seat 94 and provided on a piston rod of the second oil cylinder 93. The hinge axes of the second mounting seat 92 and the second connecting seat 94 are parallel to the hinge axis of the first hinge seat 7, the hinge axes of the second mounting seat 92 and the second oil cylinder 93 are perpendicular to each other, and the hinge axes of the second connecting seat 94 and the vertical rotation cable steel strand 95 are perpendicular to each other. The connection mode can improve traction precision, reduces deviation of installation positions of the pair of steel tower columns 2, and is beneficial to improving construction efficiency.
In addition, the first pivot seat 7 and the second pivot seat 91 have the same structure and are symmetrically arranged on two adjacent bridge piers of the bridge deck, and the first pivot seat 7 and the second pivot seat 91 respectively comprise a base 71 arranged on the bridge piers, and a cable tower hinge plate 72 and an oil cylinder hinge plate 73 respectively arranged on two sides of the base 71. After the construction of the pair of steel columns 2 at the first pivot support 7 is completed, the cable tower hinge plates 72 of the second pivot support 91 can be utilized as mounting points of the steel columns 2, namely, the function of the original first pivot support 7 is converted, and the second oil cylinders 93 are mounted on the oil cylinder hinge plates 73 of the first pivot support 7, namely, the function of the original second pivot support 91 is converted, so that the construction of the steel columns 2 on adjacent piers is completed, thereby being beneficial to saving construction materials and improving the construction efficiency.
Referring to fig. 1 and 2, the implementation principle of the present embodiment is:
s1 construction of temporary support 1
The column of the temporary support 1 uses 426X 8mm steel pipes, the cross beam uses H300X 300 hot rolled H-shaped steel, the oval horizontal projection center line of the steel tower is discharged on the bridge deck before construction, and the temporary supports 1 group are respectively arranged on two sides of the bridge deck according to a design drawing.
S2, installing an overhead anchoring seat 3 and a tower bottom anchoring seat 4
After the reinforcing plate is welded, the appearance of the outer side face of the steel tower column 2 is checked to be qualified, a tower top anchoring seat 3 and a tower bottom anchoring seat 4 are installed on the tower wall of the steel-concrete combined section according to the requirement of drawing size (the tower bottom anchoring seat 4 is installed at the position of the reinforcing plate in the corresponding tower), the welding of the tower top anchoring seat 3 and the tower bottom anchoring seat 4 meets the requirement of drawing, then a sleeve, a copper sleeve and a pin shaft are assembled in the structures of the tower top anchoring seat 3 and the tower bottom anchoring seat 4, after the checking size and the coaxiality meet the requirement, the tower bottom anchoring seat 4 is rotated to the tower cylindrical surface of a T1 section, a hinge lug plate is welded on the T1 section on site, C30 concrete is poured in the tower column of the steel-concrete combined section (the range containing the reinforcing plate), and then a 20cm steel plate is welded around the tower column to temporarily solidify the tower beam.
S3 steel tower column 2 horizontal split joint
According to the construction sequence of the steel tower column 2, hoisting the steel tower column 2 beam section to a horizontal splicing bracket platform by adopting hoisting equipment, performing test hoisting before hoisting the steel tower column 2 beam section, and then performing formal hoisting; the bridge deck assembly and welding of the steel tower column 2 are carried out in the middle of the temporary support 1, and the welding is strictly constructed according to the evaluated welding process;
the overall sequence of field welding is: the longitudinal butt weld is welded firstly, and then a circumferential butt weld is formed between the welding sections. In-situ roof butt welds using CO 2 Gas shielded welding, wherein the butt welding seam of the partition board adopts CO 2 And during gas shielded welding, a sectional back welding method from the middle to the two sides is adopted to control welding deformation, and each section is controlled to be about 500 mm. Circumferential butt welding seams among the sections, and the butt joint of the top plate and the bottom plate adopts CO 2 Gas shielded welding, web plate adopts CO 2 Welding gas shielded welding;
s4 traction structure installation
The compression bar 6 adopts a rectangular section, the distance between the transverse bridge and the center of the wallboard is 81cm, the width of the longitudinal bridge is 1m, and the distance between the centers of the pin shafts is 16m. The compression bar 6 is divided into three sections in the length direction: the steel tower column 2 is hinged with a connecting section, a standard section and a inhaul cable connecting section 64. The transverse partition plates are arranged in the compression bar 6, and the maximum distance is 2m; after the compression bar 6 is assembled and welded on the steel beam to form a whole, the compression bar 6 is firstly hung to a designed position by a crawler crane and horizontally placed on the steel tower column 2, the compression bar 6 is connected with the steel tower column 2 by adopting a pin shaft, and a bracket parallel connection 10 between the compression bars 6 is welded after the connection is completed; after the bracket parallel connection 10 is installed, a vertical rotation traction mechanism 9 and a back rope traction mechanism 5 are installed, after all the installation is completed, a 1 crane is adopted to hang a compression bar 6, a hand hoist is used for pre-tightening the traction rope until the single steel strand rope force is about 1t, a second oil cylinder 93 is started, the compression bar 6 is rotated to a design angle, the hand hoist is used for pre-tightening a vertical rotation inhaul cable steel strand 95, the axis of the compression bar 6 forms an included angle of 60 degrees with the steel tower 2 in the initial rotation state of the steel tower 2, and the inhaul cable forms an included angle of 48 degrees with the steel tower 2;
s5 steel tower column 2 test rotation
The steel tower column 2 is separated from the temporary support 1 by utilizing the 2X 25-phi s15.24mm vertical rotation inhaul cable steel stranded wires 95 on the girder surface of the steel box girder and lifted to 60 degrees, the vertical rotation inhaul cable steel stranded wires 95 need to be pre-tightened in advance, the pre-tightening force of each steel stranded wire is 1t, and each steel stranded wire is guaranteed to be in a tensioning stress state during formal vertical rotation;
s6 back stay rope steel strand 55 installation
After the angle of the steel tower column 2 reaches 60 degrees, the first oil cylinder 53 and the second oil cylinder 93 are suspended, and one side is pre-tensioned for 5t; after the back stay cable steel strand 55 is pre-tensioned, the traction force of the back stay cable steel strand 55 is continuously increased according to the tensioning process of the vertical rotation stay cable steel strand 95, and when the rotating body 70, 80 and 90 degrees, the single back stay cable steel strand 55 controls the tensioning force to be 50, 100 and 130t respectively; the steel tower column 2 is adjusted to reach a design state by utilizing the gravity of the steel tower column 2, the traction force of the vertical rotation stay cable steel strand 95 and the traction force of the back stay cable steel strand 55, the traction force is pulled to 290 DEG of the steel tower column, and the vertical rotation stay cable steel strand 95 and the back stay cable steel strand 55 are utilized to weld a main tower butt joint;
s7 welding of steel tower column 2
After the main tower of the steel tower column 2 is vertically rotated and ended, the traction structure is removed after the structure welding is completed, the flexible cable steel stranded wires 8, the vertical rotating cable steel stranded wires 95 and the back cable steel stranded wires 55 are removed, then equipment is removed, and the first oil cylinder 53, the second oil cylinder 93, the temporary pressure rod 6 and the temporary support 1 are removed and lifted by a 150t crawler crane and a floating crane.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (10)
1. The utility model provides a steel tower erects and changes device for cooperation bridge floor arranges, its characterized in that: including two sets of symmetry arrange in temporary support (1) of bridge floor both sides, overlap joint in steel column (2) on temporary support (1), set up in top of the tower anchor seat (3) and bottom of the tower anchor seat (4) on steel column (2), set up in back cable traction mechanism (5) between top of the tower anchor seat (3) and the bridge floor, articulated in depression bar (6) on bottom of the tower anchor seat (4) and first pivot seat (7) that set up on the bridge floor, set up in flexible cable wire (8) between top of the tower anchor seat (3) and depression bar (6), set up in erectly change traction mechanism (9) between depression bar (6) and the bridge floor to and set up support parallel (10) between this pair of depression bar (6), contained angle between top of the tower column (2), depression bar (6) and flexible cable wire (8) are 45~75 respectively, the articulated axial lead of depression bar (6) and first pivot seat (7) are parallel relatively respectively, and with the length direction of steel column (2) is perpendicular.
2. A steel tower vertical turning device according to claim 1, characterized in that: the included angle between the steel tower column (2) and the compression bar (6) is 60 degrees, the included angle between the steel tower column (2) and the flexible cable steel strand (8) is 48 degrees, and the included angle between the compression bar (6) and the flexible cable steel strand (8) is 72 degrees.
3. A steel tower vertical turning device according to claim 1, characterized in that: the back cable traction mechanism (5) comprises a bridge deck anchoring seat (51) arranged on a bridge deck, a first installation seat (52) hinged to the bridge deck anchoring seat (51), a first oil cylinder (53) arranged on the first installation seat (52), a first connecting seat (54) hinged to the tower top anchoring seat (3) and a back cable steel strand (55) arranged between the first connecting seat (54) and a piston rod of the first oil cylinder (53), wherein the hinge axes of the first installation seat (52) and the first connecting seat (54) are respectively parallel to the hinge axis of the first hinge seat (7).
4. A steel tower vertical turning device according to claim 3, characterized in that: the first oil cylinder (53) is hinged to the first mounting seat (52), and the hinge axes of the first mounting seat (52) and the first oil cylinder (53) are perpendicular to each other; the back inhaul cable steel stranded wire (55) is hinged to the first connecting seat (54), and the hinge axes of the first connecting seat (54) and the back inhaul cable steel stranded wire (55) are perpendicular to each other.
5. A steel tower vertical turning device according to claim 1, characterized in that: the compression bar (6) comprises a tower bottom connecting section (61) hinged to the tower bottom anchoring seat (4), a square pipe (62) arranged on the tower bottom connecting section, a plurality of reinforcing ribs (63) arranged in the square pipe (62) at equal intervals, and a guy cable connecting section (64) arranged on the square pipe (62).
6. A steel tower vertical turning device according to claim 5, wherein: an adjusting seat (81) is hinged on the inhaul cable connecting section (64), and two ends of the flexible inhaul cable steel stranded wire (8) are respectively hinged on the tower top anchoring seat (3) and the adjusting seat (81); after the flexible inhaul cable steel strand (8) is straightened, the hinge axis of the adjusting seat (81) is parallel to the hinge axis of the first hinge seat (7), and the hinge axis of the two ends of the flexible inhaul cable steel strand (8) is perpendicular to the hinge axis of the first hinge seat (7) respectively.
7. A steel tower vertical turning device according to claim 6, wherein: at least two flexible inhaul cable steel strands (8) are arranged in parallel.
8. A steel tower vertical turning device according to claim 5, wherein: the vertical rotation traction mechanism (9) comprises a second rotation hinged support (91) arranged on a bridge deck, a second installation base (92) hinged to the second rotation hinged support (91), a second oil cylinder (93) arranged on the second installation base (92), a second connecting base (94) hinged to the inhaul cable connecting section (64) and a vertical rotation inhaul cable steel strand (95) arranged between the second connecting base (94) and a piston rod of the second oil cylinder (93), and hinge axes of the second installation base (92) and the second connecting base (94) are respectively parallel to the hinge axes of the first rotation hinged support (7).
9. A steel tower vertical turning device according to claim 8, wherein: the second oil cylinder (93) is hinged to the second mounting seat (92), and the hinge axes of the second mounting seat (92) and the second oil cylinder (93) are perpendicular to each other; the vertical rotation inhaul cable steel stranded wire (95) is hinged to the second connecting seat (94), and the hinge axis lines of the second connecting seat (94) and the vertical rotation inhaul cable steel stranded wire (95) are perpendicular to each other.
10. A steel tower vertical turning device according to claim 8, wherein: the structure of the first rotary hinge seat (7) and the structure of the second rotary hinge seat (91) are the same and are symmetrically arranged on two adjacent bridge piers of the bridge deck, and the first rotary hinge seat (7) and the second rotary hinge seat (91) respectively comprise a base (71) arranged on the bridge piers, and a cable tower hinge plate (72) and an oil cylinder hinge plate (73) respectively arranged on two sides of the base (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321226051.7U CN219862432U (en) | 2023-05-17 | 2023-05-17 | Steel tower vertical rotating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321226051.7U CN219862432U (en) | 2023-05-17 | 2023-05-17 | Steel tower vertical rotating device |
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| Publication Number | Publication Date |
|---|---|
| CN219862432U true CN219862432U (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321226051.7U Active CN219862432U (en) | 2023-05-17 | 2023-05-17 | Steel tower vertical rotating device |
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| Country | Link |
|---|---|
| CN (1) | CN219862432U (en) |
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2023
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